The paper presents the results of the research carried out in the framework of the Research and Innovation Project: 20.80009.7007.01 on the estimation of the contribution of forests in the Republic of Moldova (RM) to the absorption of greenhouse gases (GHG). Thus, it is found that forests in the RM are the main source of GHG absorption, with a share of about 63%, which corresponds to the international trend. The qualitative estimation of the contribution of forests to the GHG balance is a key factor in the reporting by the RM of the Nationally Determined Intended Contribution (NDC) under the United Nations Framework Convention on Climate Change (UNFCCC). In this context, the paper describes one of the current steps in the process of updating the data on carbon stocks in forests in the southern part of the RM, as well as some conclusions on the process of strengthening national GHG sequestration capacities. According to the land cadastre (01.01.2023), the area of forest land is 451.7 thousand ha or 13.3% of the territory of the RM. The land covered by forests constitutes 370.0 thousand ha or 11.3% of the land area of the country. Forests in the RM are scattered in 3626 forest bodies with an area ranging from 5 ha to 5550 ha, located in the area of activity of 920 administrative-territorial units. From a territorial point of view, about 57.7% of the forest area is located in the central part of the RM. The northern area accounts for 26.6% of the forest area and the southern area only 15.7%. Administratively, the forest ecosystems in the southern part of the RM are divided into 6 forestry entities with a total area of 85.9 thousand ha, including the area covered by forests - 70.1 thousand ha. According to the data from the forestry management plans, the largest share in the horizontal structure of forests in the southern part of the RM is accounted for by acacia trees with 40372.8 ha or 53.8%, cvercines - 17.6%, other species - 28.6%. The situation regarding the stock of wood is partially different - cvercines hold 41.1% (2021280 m3), followed by acacia (22.1%), ash (14.6%) and poplar (5.6%). By applying the AR-AM0002 methodology, it was determined that the total amount of carbon stored in tree biomass in the southern area is 2565.1 ktC. Of this volume, about 48% (1240.5 ktC) belongs to cvercine stands, followed by acacia (21.7%) and ash (13.2%) stands. Roughly the same situation is recorded for the average carbon stock indicator, where the most carbon is held by hornbeam (99 tC/ha), cvercines (94 tC/ha) and lime (71 tC/ha), and at the opposite pole is acacia - 14 tC/ha or 7.1 times less than hornbeam and 6.7 times less than cvercines. This situation is a relevant argument for the need to gradually reduce the share of acacia in the forests of the RM in favour of natural/autochthonous species. Comparative analysis of the current average changes in carbon pools in tree biomass shows that the values recorded in the southern area are lower compared to the data in the central area, but also compared to the preliminary data in the RM.